EP0160470A2 - A lock - Google Patents
A lock Download PDFInfo
- Publication number
- EP0160470A2 EP0160470A2 EP85302774A EP85302774A EP0160470A2 EP 0160470 A2 EP0160470 A2 EP 0160470A2 EP 85302774 A EP85302774 A EP 85302774A EP 85302774 A EP85302774 A EP 85302774A EP 0160470 A2 EP0160470 A2 EP 0160470A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- lock
- solenoid
- bolt
- actuator
- operating member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/06—Controlling mechanically-operated bolts by electro-magnetically-operated detents
- E05B47/0676—Controlling mechanically-operated bolts by electro-magnetically-operated detents by disconnecting the handle
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
- E05B47/0002—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets
- E05B47/0003—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets having a movable core
- E05B47/0004—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets having a movable core said core being linearly movable
Definitions
- This invention relates to a lock. More particularly, the invention relates to a lock which uses a solenoid in controlling operation of the lock.
- the present invention seeks to provide a lock in which the solenoid energization current at the time of unlocking is relatively small and whose operation is dependable.
- a lock comprising: a lock bolt, a handle, a bolt actuator which effects movement of the lock bolt, an actuator operating member and a lock control system, the actuator operating member operating the bolt actuator upon movement of the handle and under control of the lock control system, the lock control system including a solenoid and a solenoid energization circuit, the solenoid energization circuit including a switch circuit which operates to energize the solenoid upon verification of an input code with a present code, characterised by the lock control system having a control member which is held against movement by the solenoid when energised, whereby the control member permits the actuator operating member to operate the bolt actuator to move the lock bolt with the control member disabling the actuator operating member when the solenoid is not energized.
- reference numeral 1 indicates the frame of the lock.
- a lever 2 which is operable by an external handle (not shown) and is so mounted that it can turn about the axis of a shaft 2'.
- a bolt actuation member 3 which is so mounted that it can rotate about a shaft 3'.
- This shaft 3' is connected to a shaft of an ordinary latch lock or the like (not shown). The arrangement is such that when member 3 is rotated in the direction of the arrow A at latch bolt (not shown) is withdrawn from a lock position.
- a carrier element 4 with an elongated opening 4'.
- Carrier element 4 has side portions guided and supported by a pair of guide elements 6 fixed to the frame 1.
- the carrier element 4 is disposed so that it can move reciprocally in the directions indicated by the arrows B shown in Figure 1.
- a seat element 5 which is formed integrally with the carrier element 4.
- the seat element 5 is acted upon by lever 2 and is also acted upon by a compression spring 7.
- the lever 2 and spring 7 act in opposite directions and, in operation, serve to reciprocate the carrier element 4.
- the compression spring 7 is disposed between an end plate It of the frame 1 and the seat element 5 and acts to urge the carrier element 4 away from the end plate T ⁇ .
- an actuator operating member 8 which causes rotation of the bolt actuation member 3 by acting upon the edge thereof.
- the actuator operating member 8 is pivotally mounted at one end on a pin 9 which is fixed to the carrier element 4, parallel with the lower end thereof. The free end of member 8 is urged away from the carrier element 4 by a compression spring 10.
- a control lever 11 which is mounted so that it can pivot about a shaft 12 located part way along its length.
- the lever 11 contacts the member 8 at a point along the length thereof so as to counter-act the force of the compression spring 10.
- the member 8 is forced by the control lever 11 to adopt a position (the position indicated by the full line portion of Figure 2) in which the separation of its free end from the carrier element 4 is less than that of the closest surface of the member 3.
- a plunger 14 fitted with a compression spring 13 is pivotally connected to the end of the control lever 11 opposite to the end wich contacts member 8. The other end of plunger 14 is located in a solenoid 15 fixed to the frame 1.
- the compression spring 13 acts to cause the plunger 14 to extend out of the solenoid 15 and therefore to urge the control lever 11 against a stop pin 16 which is fixed to the carrier element 4. This exerts a force on the carrier element 4 which is opposed to that of the compression spring 7.
- spring 7 possesses the greater spring force and thus the carrier element 4 and plunger 14 are balanced in a state in which the free end of the plunger 14 is in contact with the bottom face of the solenoid 15, as shown in Figure 1.
- the solenoid 15 has an energization circuit comprising a switch circuit 18 which is actuated by a CPU 17 which produces a switch-on signal only when a code recorded on a magnetic card or the like, which is inserted into the lock, has been read and verified with a specified code.
- the energization circuit also includes a microswitch 19 which is closed only when a handle (not shown) for actuating the lever 2 has been turned through a set angle from a neutral position.
- the switch circuit 18 and microswitch 19 are connected in series.
Landscapes
- Lock And Its Accessories (AREA)
Abstract
A lock comprising: a lock bolt, a handle, a bolt actuator (3) which effects movement of the lock bolt, an actuator operating member (8) and a lock control system (9-19) the actuator operating member (8) operating the bolt actuator (3) upon movement of the handle and under the control of the lock control system (9-19), the lock control system (9-19) including a solenoid (15) and a solenoid energization circuit (17-19), the solenoid energization circuit (17-19) including a switch circuit (18) which operates to energize the solenoid (13) upon verification of an input code with a present code, characterised by the lock control system (9-19) having a control member (11) which is held against movement by the solenoid (15) when energised, whereby the control member (11) permits the actuator operating member (8) to operate the bolt actuator (3) to move the lock bolt with the control member (11) disabling the actuator operating member (8) when the solenoid (15) is not energised.
Description
- This invention relates to a lock. More particularly, the invention relates to a lock which uses a solenoid in controlling operation of the lock.
- Generally when a conventional lock which uses a solenoid-actuated plunger is locked, rotation of a rotary element for actuating a dead bolt, latch bolt or similar key bolt by a handle is restrained by causing a spring force to act in a restraining direction on the plunger or to act on a restraint element such as a stopper lever connected to the plunger. The restraint imposed by the restraint element is removed and rotation of the rotary element, and hence shifting of the dead bolt or similar to an unlocking position, is permitted only when the solenoid is energized as the result of verification of a code for example recorded on a magnetic card, with a preset code.
- In a conventional lock as described above, since the arrangement is one in which restraint on the rotary element is removed by moving the plunger counter to the spring force by energizing the solenoid, the attraction force acting on the plunger must be considerably greater than the spring force. Thus a correspondingly strong magnetic field is required, so necessitating a large solenoid energization current. This results in reduced battery life and shorter replacement intervals and also results in the problem that the plunger action is liable to be uncertain.
- In view of the above, the present invention seeks to provide a lock in which the solenoid energization current at the time of unlocking is relatively small and whose operation is dependable.
- According to the present invention there is provided a lock comprising: a lock bolt, a handle, a bolt actuator which effects movement of the lock bolt, an actuator operating member and a lock control system, the actuator operating member operating the bolt actuator upon movement of the handle and under control of the lock control system, the lock control system including a solenoid and a solenoid energization circuit, the solenoid energization circuit including a switch circuit which operates to energize the solenoid upon verification of an input code with a present code, characterised by the lock control system having a control member which is held against movement by the solenoid when energised, whereby the control member permits the actuator operating member to operate the bolt actuator to move the lock bolt with the control member disabling the actuator operating member when the solenoid is not energized.
- An embodiment of the present invention will now be described by way of example only and with reference to the accompanying drawings, in which:
- Figure 1 is a plane view showing, partially as a block diagram, one embodiment of the invention, and
- Figure 2 is a side view of the embodiment shown in Figure 1.
- In the drawings, reference numeral 1 indicates the frame of the lock. In the frame 1, there is a
lever 2 which is operable by an external handle (not shown) and is so mounted that it can turn about the axis of a shaft 2'. Within frame 1 is also located abolt actuation member 3 which is so mounted that it can rotate about a shaft 3'. This shaft 3' is connected to a shaft of an ordinary latch lock or the like (not shown). The arrangement is such that whenmember 3 is rotated in the direction of the arrow A at latch bolt (not shown) is withdrawn from a lock position. Between the frame 1 and thelever 2 and between the frame 1 and member 3 (see Figure 2), there is acarrier element 4 with an elongated opening 4'.Carrier element 4 has side portions guided and supported by a pair ofguide elements 6 fixed to the frame 1. Thecarrier element 4 is disposed so that it can move reciprocally in the directions indicated by the arrows B shown in Figure 1. At the upper end of thecarrier element 4 there is aseat element 5 which is formed integrally with thecarrier element 4. Theseat element 5 is acted upon bylever 2 and is also acted upon by acompression spring 7. Thelever 2 andspring 7 act in opposite directions and, in operation, serve to reciprocate thecarrier element 4. Thecompression spring 7 is disposed between an end plate It of the frame 1 and theseat element 5 and acts to urge thecarrier element 4 away from the end plate T`. - On the
carrier element 4, there is anactuator operating member 8 which causes rotation of thebolt actuation member 3 by acting upon the edge thereof. Theactuator operating member 8 is pivotally mounted at one end on apin 9 which is fixed to thecarrier element 4, parallel with the lower end thereof. The free end ofmember 8 is urged away from thecarrier element 4 by acompression spring 10. - In the frame 1, there is also provided a
control lever 11 which is mounted so that it can pivot about ashaft 12 located part way along its length. Thelever 11 contacts themember 8 at a point along the length thereof so as to counter-act the force of thecompression spring 10. Themember 8 is forced by thecontrol lever 11 to adopt a position (the position indicated by the full line portion of Figure 2) in which the separation of its free end from thecarrier element 4 is less than that of the closest surface of themember 3. Aplunger 14 fitted with acompression spring 13 is pivotally connected to the end of thecontrol lever 11 opposite to the endwich contacts member 8. The other end ofplunger 14 is located in asolenoid 15 fixed to the frame 1. Thecompression spring 13 acts to cause theplunger 14 to extend out of thesolenoid 15 and therefore to urge thecontrol lever 11 against astop pin 16 which is fixed to thecarrier element 4. This exerts a force on thecarrier element 4 which is opposed to that of thecompression spring 7. Of the twocompression springs spring 7 possesses the greater spring force and thus thecarrier element 4 andplunger 14 are balanced in a state in which the free end of theplunger 14 is in contact with the bottom face of thesolenoid 15, as shown in Figure 1. - The
solenoid 15 has an energization circuit comprising aswitch circuit 18 which is actuated by aCPU 17 which produces a switch-on signal only when a code recorded on a magnetic card or the like, which is inserted into the lock, has been read and verified with a specified code. The energization circuit also includes amicroswitch 19 which is closed only when a handle (not shown) for actuating thelever 2 has been turned through a set angle from a neutral position. Theswitch circuit 18 andmicroswitch 19 are connected in series. When theswitch circuit 18 andmiroswitch 19 are both closed, power is supplied to thesolenoid 15 and the solenoid attracts theplunger 14 and prevents it from moving, that is, acts to maintain theplunger 14 in the position it is in prior to energization of thesolenoid 15. - In the embodiment thus described, when the handle (not shown) is turned, the
lever 2 rotates and thecarrier element 4 is moved towards the end plate 1', and so counters the force of thecompression spring 7. This movement causesmember 8 to be displaced, together with thecarrier element 4, andmember 8 approachesmember 3. However, if power is not supplied to thesolenoid 15, thecompression spring 13 pushes theplunger 14 downwards and therefore the other end of thecontrol lever 11 continues to remain in contact withstop pin 16. This has the result that the separation of the free end of themember 8 from thecarrier element 4 remains substantially constant (the position indicated by the full line portion of Figure 2). Therefore the free end ofmember 8 moves betweenmember 3 andcarrier element 4. Themember 3 is therefore not rotated and the latch bolt (not shown) remains in a lock position. In other words, the handle turns to no effect. - If the handle is turned beyond a set angle causing the
microswitch 19 to close and the code of a magnetic card has been verified by theCPU 17 so thatswitch circuit 18 is switched on, power is supplied to thesolenoid 15. As a result, even though thecarrier element 4 is displaced towards the end plate 11 of the frame 1, theplunger 14 is held in position by thesolenoid 15. The upward displacement of thecarrier element 4 therefore causes the separation between the free end of themember 8 and thecarrier element 4 to increase under the action of thecompression spring 10. The free end ofmember 8 thus moves to a position (indicated by the dashed line portion of Figure 2) in which it lies in more or less the same plane asmember 3. When it has come into contact with the edge ofmember 3, continued movement of thecarrier element 4 results inmember 8 rotatingmember 3 in the direction of the arrow A in Figure 1. - This causes the latch bolt (not shown) that is connected to the
shaft 31 to be withdrawn, thereby unlocking the door. Themicroswitch 19 is returned to an open position by a spring force when the handle is released following unlocking, this stops unnecessary supply of power to thesolenoid 15 and so prevents wasteful consumption of the battery power. - Although the above description refers to a latch bolt being actuated by the
member 3, other forms of bolts such as a dead bolt are readily envisaged. - Since, as described in detail above, supply of power to a solenoid for actuation of a plunger results in the plunger being held in the same position in which it was before the supply of power, operation can be effected reliably with a small current and for a battery of given capacity the life is much longer than in a conventional electric lock.
Claims (6)
1. A lock comprising: a lock bolt, a handle, a bolt actuator (3) which effects movement of the lock bolt, an actuator operating member (8) and a lock control system (9-19), the actuator operating member (8) operating the bolt actuator (3) upon movement of the handle and under the control of the lock control system (9-19). the lock control system (9-19) including a solenoid (15) and a solenoid energization circuit (17-19), the solenoid energization circuit (17-19) including a switch circuit (18) which operates to energize the solenoid (15) upon verification of an input code with a present code, characterised by the lock control system (9-19) having a control member (11) which is held against movement by the solenoid (15) when energised, whereby the control member (11) permits the actuator operating member (8) to operate the bolt actuator (3) to move the lock bolt with the control member (8) disabling the actuator operating member (8) when the solenoid (15) is not energised.
2. A lock as claimed in claim 1, characterised in that said energization circuit (17-19) includes a switch (19) in series with said switch circuit (18). said switch (19) being closed when the handle has been moved through a preset distance and being opened when said handle returns to its rest position.
3. A lock as claimed in claim 1 or 2, characterised in that a first spring (13) acts between the solenoid (15) and the control member (11) and a second spring (7) of greater power than the first spring (13) acts against operation of the bolt actuation member (3) by the actuator operating member (8).
4. A lock as claimed in any preceding claim, characterised in that the actuator operating member (8) is located on a carrier (4) which is reciprocated upon movement of the handle.
5. A lock as claimed in claim 4, characterised in that the actuator operating member (8) is a lever pivoted at one end to the carrier (4) and having the other end thereof urged away from the carrier (4) by a spring (10) to a position enabling operation of the bolt actuator (3).
6. A lock as claimed in claim 5, characterised in that prior to movement of the carrier (4) by the handle the control member (11) holds the actuator operating member (8) against said spring (10) in a position which if maintained upon movement of the carriage (4) does not enable the actuator operating member (8) to operate the bolt actuator (3).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63545/84 | 1984-04-27 | ||
JP6354584U JPS60174762U (en) | 1984-04-27 | 1984-04-27 | electric lock device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0160470A2 true EP0160470A2 (en) | 1985-11-06 |
EP0160470A3 EP0160470A3 (en) | 1986-10-08 |
Family
ID=13232294
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85302774A Withdrawn EP0160470A3 (en) | 1984-04-27 | 1985-04-19 | A lock |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0160470A3 (en) |
JP (1) | JPS60174762U (en) |
AU (1) | AU4168485A (en) |
ES (1) | ES8607464A1 (en) |
GB (1) | GB2159566A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0241323A2 (en) * | 1986-03-07 | 1987-10-14 | Sedley, Bruce Samuel | Magnetic key operated locking mechanism |
WO1988009421A1 (en) * | 1987-05-18 | 1988-12-01 | Frorest Pty Limited | Locking device |
GB2245024A (en) * | 1990-06-16 | 1991-12-18 | Ped Ltd | Locking device |
EP0479095A1 (en) * | 1990-10-02 | 1992-04-08 | Rahrbach GmbH | Improvement in or relating to a lock operated by electromagnetic means |
GB2281938A (en) * | 1993-09-20 | 1995-03-22 | Harrow Products Inc | Auxiliary retrofit lock system for mortise lock |
US6363762B1 (en) * | 1996-12-24 | 2002-04-02 | Kaba Schliessysteme Ag | Locking device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AUPM409094A0 (en) * | 1994-02-25 | 1994-03-24 | Trimec Securities Pty. Limited | Improvements in electromagnetic locks |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE628523C (en) * | 1933-09-09 | 1936-04-06 | Robinson Miller Walker | Door lock with a latch driver held in place by an electromagnetically triggered locking member |
DE2622720A1 (en) * | 1976-05-21 | 1977-11-24 | Bruno Matzanke | Door lock with card and solenoid actuation - has solenoid actuated clutch and photoelectric monitor for lock operation |
EP0094592A1 (en) * | 1982-05-13 | 1983-11-23 | Klaus Dr. Meister | Locking device |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB404890A (en) * | 1933-08-04 | 1934-01-25 | Robinson Miller Walker | Improvements in or relating to locks |
US4411144A (en) * | 1976-04-16 | 1983-10-25 | Kadex, Inc. | Electronic lock system |
US4425597A (en) * | 1982-02-16 | 1984-01-10 | Schramm Wayne E | Electronic locking method and apparatus |
-
1984
- 1984-04-27 JP JP6354584U patent/JPS60174762U/en active Pending
-
1985
- 1985-04-19 EP EP85302774A patent/EP0160470A3/en not_active Withdrawn
- 1985-04-23 GB GB08510308A patent/GB2159566A/en not_active Withdrawn
- 1985-04-24 AU AU41684/85A patent/AU4168485A/en not_active Abandoned
- 1985-04-26 ES ES85542593A patent/ES8607464A1/en not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE628523C (en) * | 1933-09-09 | 1936-04-06 | Robinson Miller Walker | Door lock with a latch driver held in place by an electromagnetically triggered locking member |
DE2622720A1 (en) * | 1976-05-21 | 1977-11-24 | Bruno Matzanke | Door lock with card and solenoid actuation - has solenoid actuated clutch and photoelectric monitor for lock operation |
EP0094592A1 (en) * | 1982-05-13 | 1983-11-23 | Klaus Dr. Meister | Locking device |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0241323A2 (en) * | 1986-03-07 | 1987-10-14 | Sedley, Bruce Samuel | Magnetic key operated locking mechanism |
EP0241323A3 (en) * | 1986-03-07 | 1988-10-19 | Sedley, Bruce Samuel | Magnetic key operated locking mechanism |
WO1988009421A1 (en) * | 1987-05-18 | 1988-12-01 | Frorest Pty Limited | Locking device |
US4949562A (en) * | 1987-05-18 | 1990-08-21 | Frorest Pty Limited | Locking device |
GB2245024A (en) * | 1990-06-16 | 1991-12-18 | Ped Ltd | Locking device |
EP0479095A1 (en) * | 1990-10-02 | 1992-04-08 | Rahrbach GmbH | Improvement in or relating to a lock operated by electromagnetic means |
GB2281938A (en) * | 1993-09-20 | 1995-03-22 | Harrow Products Inc | Auxiliary retrofit lock system for mortise lock |
US6363762B1 (en) * | 1996-12-24 | 2002-04-02 | Kaba Schliessysteme Ag | Locking device |
Also Published As
Publication number | Publication date |
---|---|
EP0160470A3 (en) | 1986-10-08 |
GB8510308D0 (en) | 1985-05-30 |
AU4168485A (en) | 1985-10-31 |
ES8607464A1 (en) | 1986-06-01 |
JPS60174762U (en) | 1985-11-19 |
GB2159566A (en) | 1985-12-04 |
ES542593A0 (en) | 1986-06-01 |
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Owner name: UNIQEY INTERNATIONAL LIMITED |
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18D | Application deemed to be withdrawn |
Effective date: 19870409 |